中华人民共和国住房和城乡建设部公告

前言

1　总则

2　术语

3　建筑物的防雷分类

4　建筑物的防雷措施

• 4.1　基本规定

• 4.2　第一类防雷建筑物的防雷措施

• 4.3　第二类防雷建筑物的防雷措施

• 4.4　第三类防雷建筑物的防雷措施

• 4.5　其他防雷措施

5　防雷装置

• 5.1　防雷装置使用的材料

• 5.2　接闪器

• 5.3　引下线

• 5.4　接地装置

6　防雷击电磁脉冲

• 6.1　基本规定

• 6.2　防雷区和防雷击电磁脉冲

• 6.3　屏蔽、接地和等电位连接的要求

• 6.4　安装和选择电涌保护器的要求

附录A　建筑物年预计雷击次数

附录B　建筑物易受雷击的部位

附录C　接地装置冲击接地电阻与工频接地电阻的换算

附录D　滚球法确定接闪器的保护范围

附录E　分流系数kc

附录F　雷电流

附录G　环路中感应电压和电流的计算

附录H　电缆从户外进入户内的屏蔽层截面积

附录J　电涌保护器

• J.1　用于电气系统的电涌保护器

• J.2　用于电子系统的电涌保护器

本规范用词说明

引用标准名录

1 General provisions

2 Terms

3 Classification of structures to be protected against lightning

4 Protection measures for structures against lightning

• 4.1 Basic requirement

• 4.2 Protection measures for first class of structures to be protected against lightning

• 4.3 Protection measures for second class of structures to be protected against lightning

• 4.4 Protection measures for third class of structures to be protected against lightning

• 4.5 Other protection measures against lightning

5 Lightning protection system

• 5.1 Materials for lightning protection system

• 5.2 Air-termination system

• 5.3 Down-conductor system

• 5.4 Earth-termination system

6 Protection against LEMP（lightning electromagnetic impulse）

• 6.1 Basic requirement

• 6.2 Lightning protection zones and protection against LEMP

• 6.3 Requirements for magnetic shielding，earthing and equipotential bonding

• 6.4 Requirements for installation and selection of SPDs（surge protective devices）

Appendix A Expected annual number of lightning flash for structures

Appendix B Structure parts suffered easily by lightning stroke

Appendix C Conversion from power frequency earthing resistance to impulse earthing resistance of earth-termination system

Appendix D Determination of protected volume of air-termination system with rolling sphere method

Appendix E Values of coefficient kc

Appendix F Lightning current

Appendix G Calculation of induced voltages and currents in loops

Appendix H Cross-section of the entering cable screen

Appendix J Surge protective devices

Explanation of wording in this code

List of quoted standards